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#f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>分析檢測(cè)原子吸收分光光度計(jì)排名,原子吸收分光光度計(jì)</p><p><span>***更新：</span>2021-01-29 06:14:24</p><p><span id="click" >瀏覽次數(shù)：3次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="iww8gc3" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海儀電分析儀器有限公司</a></p><p><span>聯(lián)系人：</span>薛馬駿</p><p><span>郵箱: </span>ydfxwx@qq.com</p><p><span>電話: </span>18001994173</p><p><span>傳真: </span>021_</p><p><span>網(wǎng)址: </span>http://www.inesa-a.com</p><p><span>手機(jī): </span>021-34530361</p><p><span>地址: </span>徐塘路88號(hào)7幢4層、9幢</p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="ksjah3v" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="xwipqhd" class="box"><p><p style="text-indent:25px">原子吸收分光光度計(jì)常見的故障解決方法：1，分析檢測(cè)原子吸收分光光度計(jì)排名、故障現(xiàn)象：燃燒器底座不光潔，造成汽化的樣品被阻擋，影響靈敏度，分析檢測(cè)原子吸收分光光度計(jì)排名。產(chǎn)生原因：一般燃燒器均是由上蓋部分（燃燒縫也在此處）和底座結(jié)合而成，但是，當(dāng)?shù)鬃暗鬃鼙诒桓g后同樣會(huì)生銹，從而造成汽化樣品因受阻而流通不暢，使測(cè)試靈敏度降低。排除方法：與清潔燃燒縫的方法一樣，用1000目水砂紙打磨底座和底座管壁。2、故障現(xiàn)象：冷卻循環(huán)水溫度過低，分析檢測(cè)原子吸收分光光度計(jì)排名，致使燃燒縫結(jié)露造成不易點(diǎn)火或火焰分叉故障。產(chǎn)生原因：當(dāng)冷卻循環(huán)水的溫度遠(yuǎn)遠(yuǎn)低于室內(nèi)溫度時(shí)，燃燒器的溫度同樣低于室內(nèi)溫度，于是，當(dāng)被汽化的樣品經(jīng)過燃燒縫時(shí)，比較多樣品因受急速降溫所形成的水珠被潴留在縫火焰原子吸收分光光度計(jì)對(duì)大多數(shù)元素有較高靈敏度。分析檢測(cè)原子吸收分光光度計(jì)排名</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="分析檢測(cè)原子吸收分光光度計(jì)排名,原子吸收分光光度計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419988163192494/7997740.png"></div><p style="text-indent:25px">原子吸收分光光度計(jì)按光束形成可分為單光束（指從光源中發(fā)出的光只以單一光束的形式通過原子化器、單色器和檢測(cè)系統(tǒng)）和雙光束（指從光源發(fā)出的光被切光器分成兩束強(qiáng)度相等的光，一束為樣品光束通過原子化器被基態(tài)原子部分吸收；另一束只作為參比光束，不通過原子化器，其光強(qiáng)度不被減弱）兩類；按包含“單獨(dú)”的分光系統(tǒng)和檢測(cè)系統(tǒng)的數(shù)目又可分為單道（指儀器只有一個(gè)光源，一個(gè)單色器，一個(gè)顯示系統(tǒng)，每次只能測(cè)一種元素）、雙道（指儀器有兩個(gè)不同光源，兩個(gè)單色器兩個(gè)檢測(cè)顯示系統(tǒng)）和多道。目前普遍使用的是單道單光束或單道雙光束原子吸收分光光度計(jì)。原子吸收分光光度計(jì)型號(hào)繁多，不同型號(hào)儀器性能和應(yīng)用范圍不同。工業(yè)原子吸收分光光度計(jì)報(bào)價(jià)原子吸收分光光度計(jì)的實(shí)際應(yīng)用：有機(jī)物分析中的應(yīng)用。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="分析檢測(cè)原子吸收分光光度計(jì)排名,原子吸收分光光度計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419988105282341/1372565.png"></div><p style="text-indent:25px">原子吸收分光光度計(jì)儀器工作原理：將待分析物質(zhì)以適當(dāng)方法轉(zhuǎn)變?yōu)槿芤?，并將溶液以霧狀引入原子化器。此時(shí)，被測(cè)元素在原子化器中原子化為基態(tài)原子蒸氣。當(dāng)光源發(fā)射出的與被測(cè)元素吸收波長(zhǎng)相同的特征譜線通過基態(tài)原子蒸氣時(shí)，光能因被基態(tài)原子所吸收而減弱，其減弱的程度（吸光度）在一定條件下，與基態(tài)原子的數(shù)目（元素濃度）之間的關(guān)系，遵守朗伯-比耳定律。被基態(tài)原子吸收后的譜線，經(jīng)分光系統(tǒng)分光后，由檢測(cè)器接收，轉(zhuǎn)換為電信號(hào)，再經(jīng)放大器放大，由顯示系統(tǒng)顯示出吸光度或光譜圖。儀器基本結(jié)構(gòu)：原子吸收分光光度計(jì)主要由光源、原子化器、單色器、檢測(cè)系統(tǒng)和顯示系統(tǒng)等部分組成。</p><p style="text-indent:25px">原子吸收分光光度計(jì)與紫外可見分光光度計(jì)的區(qū)別：1、光源:紫外可見分光光度計(jì)使用的是鎢燈或氘燈發(fā)射連續(xù)光譜。原子吸收分光光度計(jì)使用的是空心陰極燈發(fā)射特征波長(zhǎng)的銳線光，選擇性會(huì)更好。2、檢測(cè)器：紫外可見分光光度計(jì)一般使用光電管來檢測(cè)。而原子吸收分光光度計(jì)使用的是光電倍增管，分辨力比光電管強(qiáng)。3、應(yīng)用：原子吸收分光光度計(jì)是屬于原子光譜。紫外可見分光光度計(jì)屬于分子光譜，兩者都符合朗伯-比耳定律；4、檢出限:原子吸收分光光度計(jì)檢出限低，火焰原子吸收法的檢出限可達(dá)到ppb級(jí)。紫外可見分光光度計(jì)如果顯色劑不同則檢出限也不一樣，但每種顯色劑帶來的干擾也會(huì)不一樣。我國在1963年開始對(duì)原子吸收分光光度計(jì)有一般性介紹。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="分析檢測(cè)原子吸收分光光度計(jì)排名,原子吸收分光光度計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419988246893719/5353894.png"></div><p style="text-indent:25px">原子吸收光譜儀分析中的干擾效應(yīng)：1、電離干擾：在高溫下原子電離，使基態(tài)原子的濃度減少，引起原子吸收信號(hào)降低，此種干擾稱為電離干擾。電離效應(yīng)隨溫度升高、電離平衡常數(shù)增大而增大，隨被測(cè)元素濃度增高而減小。加入更易電離的堿金屬元素，可以有效地消除電離干擾。2、光譜干擾：光譜干擾包括譜線重疊、光譜通帶內(nèi)存在非吸收線、原子化池內(nèi)的直流發(fā)射、分子吸收、光散射等。當(dāng)采用銳線光源和交流調(diào)制技術(shù)時(shí)，主要考慮分子吸收和光散射的影響，它們是形成光譜背景的主要因素。原子吸收分光光度計(jì)的優(yōu)點(diǎn)是：原子化效率高，在可調(diào)的高溫下試樣利用率達(dá)100%，靈敏度高。工業(yè)原子吸收分光光度計(jì)報(bào)價(jià)</p><p style="text-indent:25px">原子吸收分光光度計(jì)檢出限低，火焰原子吸收法的檢出限可達(dá)到ppb級(jí)。分析檢測(cè)原子吸收分光光度計(jì)排名</p><p style="text-indent:25px">火焰原子吸收分光光度計(jì)，利用空氣—乙炔測(cè)定的元素可達(dá)30多種，若使用氧化亞氮—乙炔火焰，測(cè)定的元素可達(dá)70多種。但氧化亞氮—乙炔火焰安全性較差，應(yīng)用不普遍?？諝狻胰不鹧嬖游辗止夤舛确?，一般可檢測(cè)到PPm級(jí)（10－6），精密度1％左右。國產(chǎn)的火焰原子吸收分光光度計(jì)，都可配備各種型號(hào)的氫化物發(fā)生器（屬電加熱原子化器），利用氫化物發(fā)生器，可測(cè)定砷（As）、銻（Sb）、鍺（Ge）、碲（Te）等元素。一般靈敏度在ng／ml級(jí)（10－9），相對(duì)標(biāo)準(zhǔn)偏差2％左右。汞(Hg)可用冷原子吸收法測(cè)定。分析檢測(cè)原子吸收分光光度計(jì)排名</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3061372.html</p></div></div></div></div></div><div id="bevxj82" class="page-right twoColRt"><div id="l78wvhi" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="aalcjkb" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強(qiáng) 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